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HeyGenVoice

HeyGen Voice

Expressive speech in 39 languages, and a very cheap Turbo.

voice/heygen-voice
Try it in StudioUse with your agent or API

HeyGen Voice

Voice

Price
from 0.17 credits / minute
Typical time
about 11 s
Makes
Text to speech

Best for

HeyGen Voice speaks with 24 library voices in 39 languages. The Turbo version is faster and costs a fraction of a cent per line.

  • NPC dialogue in a stock voice.
  • Localized voice-over from one script.
  • Thousands of short lines with Turbo.

Put it together

Where HeyGen Voice fits in a game, with the models it works well with. Your agent runs every step.

Price

ModeModelPrice
Text to speechHeyGen Voice1.3 credits / minute
Text to speechHeyGen Voice Turbo0.17 credits / minute

Paid from your Summer credits.

Use it from code or your agent

Sign in once with summer login. Your agent or your code then runs it with your paid credits.

npx -y summer-engine@latest login
npx -y summer-engine@latest api run voice/heygen-voice \
  --input '{"text":"The gate opens at dawn. Bring the lantern.","voiceId":"Jonah"}' \
  --download .

voice/heygen-voice: $0.015 per 1,000 characters. Paid from your Summer credits.

Inputs

What input takes for voice/heygen-voice. Send only what you need; Summer fills in tested defaults.

  • textstringRequired · up to 5000 characters

    The words to speak, at most 5000 characters.

  • voiceIdstringup to 100 characters

    Speech: a voice of the game cast.

  • voiceSettingsobject

    Speech: voice tuning.

    Show 5 child parameters
    • voiceSettings.stabilitynumber0 to 1
    • voiceSettings.similarityBoostnumber0 to 1
    • voiceSettings.stylenumber0 to 1
    • voiceSettings.speednumber0.7 to 1.2
    • voiceSettings.useSpeakerBoostboolean

Model docs · Summer API docs · Set up the Summer MCP server · Try it in the browser

Questions

What is HeyGen Voice good for in game development?
HeyGen Voice speaks with 24 library voices in 39 languages. The Turbo version is faster and costs a fraction of a cent per line. Typical game uses: NPC dialogue in a stock voice; localized voice-over from one script; thousands of short lines with Turbo.
How much does HeyGen Voice cost in Summer?
In Summer Studio: HeyGen Voice (text to speech): 1.3 credits / minute; HeyGen Voice Turbo (text to speech): 0.17 credits / minute. It is charged from your Summer credits.
What kind of audio can HeyGen Voice make?
In Summer, HeyGen Voice is used for text to speech.
Can I use HeyGen Voice from Claude Code, Cursor or Codex?
Yes. Connect the Summer MCP server to Claude Code, Cursor, Codex or another MCP client, then ask your agent to generate with summer_generate_audio with capability: "text_to_speech", modelId: "heygen-voice". Setup instructions are at summerengine.com/mcp.
Where do HeyGen Voice results go?
Every generation is saved to your Summer asset library. From there you can download it or bring it into a Summer Engine project.